Mercurial > prosody-modules

annotate mod_log_events_by_memory/README.markdown @ 5646:d67980d9e12d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_http_oauth2: Apply refresh token ttl to refresh token instead of grant The intent in 59d5fc50f602 was for refresh tokens to extend the lifetime of the grant, but the refresh token ttl was applied to the grant and mod_tokenauth does not change it, leading to the grant expiring regardless of refresh token usage. This makes grant lifetimes unlimited, which seems to be standard practice in the wild.
author Kim Alvefur <zash@zash.se>
date Mon, 11 Sep 2023 10:48:31 +0200
parents f781a90018f4
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3615
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 This module compares the memory usage reported by Lua before and after
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff changeset
2 each event and reports it to the log if it exceeds the configuration
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff changeset
3 setting `log_memory_threshold` (in bytes).
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff changeset
4
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff changeset
5 ``` lua
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff changeset
6 log_memory_threshold = 20*1024
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff changeset
7 ```
5fe34e5f9829 mod_log_events_by_memory: Log events where Lua memory usage increased
Kim Alvefur <zash@zash.se>
parents:
diff changeset
8
3618
f781a90018f4 mod_log_events_by_memory: Add link to post explaining different kinds of memory leaks
Kim Alvefur <zash@zash.se>
parents: 3617
diff changeset
9 If you are looking to identify memory leaks, please first read [Three
f781a90018f4 mod_log_events_by_memory: Add link to post explaining different kinds of memory leaks
Kim Alvefur <zash@zash.se>
parents: 3617
diff changeset
10 kinds of memory
f781a90018f4 mod_log_events_by_memory: Add link to post explaining different kinds of memory leaks
Kim Alvefur <zash@zash.se>
parents: 3617
diff changeset
11 leaks](https://blog.nelhage.com/post/three-kinds-of-leaks/).
f781a90018f4 mod_log_events_by_memory: Add link to post explaining different kinds of memory leaks
Kim Alvefur <zash@zash.se>
parents: 3617
diff changeset
12
3617
61b9c89db212 mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents: 3615
diff changeset
13 Prosody runs on Lua which uses automatic memory management with garbage
61b9c89db212 mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents: 3615
diff changeset
14 collection, so the numbers reported by this module are very likely to be
61b9c89db212 mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents: 3615
diff changeset
15 useless for the purpose of identifying memory leaks. Large, but
61b9c89db212 mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents: 3615
diff changeset
16 temporary, increases in memory usage can however highlight other kinds
61b9c89db212 mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents: 3615
diff changeset
17 of performance problems and sometimes even provide hits for where to
61b9c89db212 mod_log_events_by_memory: Add a rant to README about uselessness of this module
Kim Alvefur <zash@zash.se>
parents: 3615
diff changeset
18 look for memory leaks.